CONTROLS, INDICATORS AND COMPONENTS
Copyright
Trace Engineering Company, Inc.
5916 - 195th Street N. E.
Arlington, WA 98223
Telephone: 360/435-8826
Fax: 360/435-2229
www.traceengineering.com
SW Series Inverter/Charger
Part No. 2031-5
Rev. B: Sept 1, 1999
Page
13
INTERNAL COMPONENTS AND INDICATORS
Additional components and indicators are located behind three removable AC Access Panels located on
the AC Side of the unit. They include the AC Terminal Block, BTS Connector, three LED indicators and
the Aux and Gen Control Relay Connectors.
Figure 5, Internal Components and Indicators
LED INDICATORS
Three LED indicators allow visual indication of operation of the RY7, RY8 and AC1 relays.
RY7 (Yellow) LED
Allows visual indication of relay RY7 operation. During the automatic generator control sequence, the
LED will be on to show that RY7 is closed (engaged) from the N.O. to the COM contacts, and will be
off when RY7 is opened (disengaged).
RY8 (Green) LED
Allows visual indication of relay RY8 operation. During the automatic generator control sequence, the
LED will be on to show that RY8 is closed (engaged) from the N.O. to the COM contacts, and will be
off when RY8 is opened (disengaged).
AC1 RELAY (Red) LED
Allows visual indication of AC1 relay operation. The LED will be on when the AC1 relay is closed
(engaged). This LED along with the test-jumper adjacent to the LED is used by utilities to perform
voltage and frequency tests to qualify the SW Series Inverter/Charger for line-tie applications.
BTS PORT
The battery temperature sensor (BTS) can be connected (plugged in) at the RJ-11 four-conductor
connector, located on the AC Circuit Board. The BTS provides information that enables the three-stage
standby battery charger to “fine tune” the battery charge voltages for better charging performance, greater
efficiency and longer battery life.
AC TERMINAL BLOCK
A six position terminal block is provided to make the AC connections. The terminal block is located on the
AC Circuit Board. The terminal block is used to hardwire all AC input and output connections.
RY7 (Yellow)
LED
RY8 (Green)
LED
AC1 Relay
(Red) LED
BTS
Connector
AC
Terminal Block
AC
Safety Ground
Aux and Gen Control
Relay Connectors
Summary of Contents for SW II - REV 4.01
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